Credit: iStock This year marked the 10th anniversary of the I Spy Physiology blog! In a year of great challenge to science funding, talking about the value of science has never been more important, and our contributors understood the assignment. They’ve shared their stories about becoming a science advocate and transitioning from mentee to a … Continue reading The Top 10 Most-read I Spy Physiology Posts of 2025
Spotlight On: Metastasis
Credit: iStock/Ekaterina79 Cancer is a scary experience. You may have heard the term “metastasis” in relation to cancer that can spark more worry. You might not understand exactly what metastasis is. It’s the spread of cancer, from its original site,—such as when breast cancer spreads to the lungs or the brain. Read on to learn … Continue reading Spotlight On: Metastasis
The Brain-boosting Power of Strength Training
Credit: iStock/Zorica Nastasic As the population ages, Alzheimer's disease and related dementias and other neurodegenerative diseases are on the rise. These conditions can make independence harder, but exercise can protect your brain. Aerobic exercises such as walking, jogging and bicycling can improve brain health, size and function. Research has shown that strength training may offer … Continue reading The Brain-boosting Power of Strength Training
The Gender Gap in Medicine: Why Drugs Must Be Developed with Women in Mind
Credit: iStock/blackCAT As a scientist, I’ve often wondered: Why do women report more severe side effects from medications? The answer isn't a medical mystery; it’s historical oversight. For decades, medical research and drug development disproportionately focused on men, disregarding the unique biological and physiological complexities of women. This singular focus created a significant and lasting … Continue reading The Gender Gap in Medicine: Why Drugs Must Be Developed with Women in Mind
How Too Much Salt Makes Your Gut Bacteria Sick
Credit: iStock Salt is widely used as a seasoning in our everyday food. It is sometimes used to preserve food. The American Heart Association advises eating less than 2,300 milligrams of salt daily. Eating salt in moderation is good for the muscles and the nerves. However, eating too much salt is linked to several diseases, … Continue reading How Too Much Salt Makes Your Gut Bacteria Sick
Nanotechnology in Physiology: The Science Behind the Science Fiction
Credit: iStock/boonstudio When you hear “nanotechnology,” the image that comes to mind may be one from a recent movie you have seen, maybe in the Avengers franchise or the Terminator series. Many of these films use nanotechnology in what may seem like an unrealistic way to make some science fiction “movie magic.” Nanotechnology is being … Continue reading Nanotechnology in Physiology: The Science Behind the Science Fiction
A Fatty Truth: How Your Meat and Eggs Become Messages
Credit: iStock/4kodiak When you bite into a burger or crack an egg open, it's more than just a meal. Every fat molecule in that food carries information—tiny signals your body listens to. The way animals are raised, whether in a pasture or in conventional systems, subtly shifts the types of fats that end up on … Continue reading A Fatty Truth: How Your Meat and Eggs Become Messages
Good Morning, Fall! How ‘Falling Back’ to Standard Time Affects Our Body Clock
Credit: iStock/simonapilolla Fall is here—a time for sweaters and scarves, warm beverages and changing leaves. Nights grow longer as the sun sets earlier, and in many parts of the U.S., we “fall back” from daylight saving to standard time to accommodate this shift. We may celebrate the feeling of getting to sleep in, or we … Continue reading Good Morning, Fall! How ‘Falling Back’ to Standard Time Affects Our Body Clock
Nature’s Vampires: The Flying and Feeding of Bats
Credit: iStock/Wirestock October has taken the stage. The leaves blush red, pumpkins smile from porches and classic films retell the Slavic folklore of the night: vampires! Vampires may not be real, but their origins are linked to bats—one of the ecosystem’s most fascinating and spooky mammals. Bats are nocturnal mammals that evolved with powered flight … Continue reading Nature’s Vampires: The Flying and Feeding of Bats
Embrace the Burn: Dispelling Years of Lactate Misconceptions
Credit: iStock You may be familiar with the feeling known as “the burn”—the tingling soreness emanating from deep within your muscles, telling you to stop what you’re doing and rest. The burn can appear during the last few reps at the gym, the end of a long jog or even during the last few twists … Continue reading Embrace the Burn: Dispelling Years of Lactate Misconceptions